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Title: Topology Optimization of a Surface Permanent Magnet Motor With High Torque DensityAuthors: Hayashi, Shogo; Yatsurugi, Manabu; Kubota, Yoshihisa; Soma, Shingo; Igarashi, HajimeAbstract: This article introduces a topology optimization method for a surface permanent magnet (SPM) motor with high torque density suitable for air mobility. The proposed method can be used to determine the material distribution and magnetization direction in PMs to maximize the torque density at a constant current. The torque performance of the optimized motor is superior to that of a conventional motor with a Halbach array, whose magnetization varies linearly along the circumferential direction. The novel optimized motor has a triangular magnetic material on the rotor surface and an air region inside the rotor.

Title: A Comprehensive Optimal Design of Inductors Using Monte Carlo Tree SearchAuthors: Yin, Shuli; Sato, Hayaho; Igarashi, HajimeAbstract: This article presents a strategy of optimizing inductors with non-linear properties, using Monte Carlo tree search (MCTS). Compared with the existing optimization tools, the proposed method can simultaneously optimize global configuration, such as material, number of turns and winding arrangement, and local geometry. It indicates that the strategy statistically provides a best solution from global and local aspects after iterations with different lengths of chromosomes, which is challenging in conventional optimization techniques. The covariance matrix adaptation evolution strategy (CMA-ES) is used to solve the parametric optimization. For validation, the optimizations on 2-D inductors are performed. The proposed method is very suitable for the optimization of devices with possibly different global configurations. The most notable originality of t ...

2024年3月の特集「なぜ「館内限定公開」のページがあるのか？」を掲載しました。

Doctrine for tactical nuclear weapons outlined in training scenarios for an invasion by China

タイトル: Sweet Memories of Fieldwork in the pre-Computer Era著者: MATISOFF, James A.記述: The 55th International Conference on Sino-Tibetan Languages and Linguistics (ICSTLL-55) was held on September 15th–18th, 2022 at Kyoto University in Japan. The organizing committee of ICSTLL-55 planned to invite Prof. James A. Matisoff to Kyoto and asked him to make a keynote speech at the venue, but due to the disaster of COVID-19, he was unable to visit Japan and was forced to give his lecture online. The keynote speech was titled: Sweet memories of fieldwork in the pre-computer era, which was presented on September 15 Thursday from 9:30 am JST (14 Wednesday 17:30 PDT). In compiling this volume of research papers presented at ICSTLL-55, we have decided, with the approval of Professor Matisoff, to include the transcript of his keynote speech at ICSTLL-55.

タイトル: 内陆闽语非南朝吴语直系后代说著者: 沈, 瑞清; 盛, 益民抄録: The hypothesis that “modern Wu, Min dialects are both derived from Wu dialect of the Southern dynasties or Jiangdong Fangyan” has received wide acceptance since it was proposed by Norman (1983) and Ding (1988). However, the hypothesis is largely based on evidences of shared retention rather than shared innovation. While the previous evidence can demonstrate that modern Wu, Min dialects are closely related to Wu dialect of the Southern dynasties, they are not sufficient to portray the exact genetic relationship among them. In this paper, we reexamined the hypothesis according to some linguistic innovations attested in Wu dialect of the Southern dynasties, namely the lexical replacement in the pronoun system involving ‘he/she’, ‘Plural for Personal Pronoun’, ‘That’, ‘How (heavy)’, and ‘What’. It is found that while the innovative pronoun forms are attested in modern Wu ...

タイトル: Grammatical Phenomena of Sino-Tibetan Languages 6: Typology and historical change記述: NOHARA Masaki and IKEDA Takumi (eds.); 野原将揮, 池田巧編; Most of the articles in this volume are based on talks at the 55th International Conference on Sino-Tibetan Languages and Linguistics (ICSTLL-55) held from September 15th to 18th, 2022.

Consultancy says marketing claims were ‘inaccurate’ and it has never worked for Beijing

Weakness in the region makes hefty payouts increasingly difficult to justify

SARTRASの共通目的基金による2023年度の委託事業として、「クリエイターのための著作権講座（写真家編）」を実施することとなりました。（委託先：公益社団法人著作権情報センター（CRIC）） 写真や出版に携わる方を対象に、著作権や著作権契約に関する基礎知識を解説します。写真家、出版関係者だけでなく、著作権に興味のある方であればどなたでもご参加いただけます。 詳細は、下記よりご確認ください。 https://www.cric.or.jp/index_doc/creator2023_photo.pdf   The post 「クリエイターのための著作権講座（写真家編）」開催のご案内 first appeared on 一般社団法人 授業目的公衆送信補償金等管理協会 .